- #Mac could not unmount disk mac os#
- #Mac could not unmount disk install#
- #Mac could not unmount disk password#
- #Mac could not unmount disk mac#
I suggest using Ethernet if possibleīecause it is three times faster than wireless. Note : You will need an active Internet connection. On my laptop, the drive shows up in disk utility but not in Finder.
#Mac could not unmount disk mac#
Being unable to unmount a disk on your Mac can seem like a terrifying and challenging problem to solve. My external backup drive stopped showing up in finder and made disk utility freeze on 'loading disks' on my desktop.
#Mac could not unmount disk password#
Press Return and type in your admin password if you’re asked for it.
#Mac could not unmount disk install#
Reinstall Lion/Mountain Lion, Mavericks : Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Type: sudo diskutil unmountDisk /dev/disks1 replace ‘disks1’ with the identifier you noted in Step 4. The Erase button and wait until the process has completed.
![mac could not unmount disk mac could not unmount disk](https://cdn.cultofmac.com/wp-content/uploads/2020/02/unmount-disk-utility.jpg)
The Security button and set the ZeroData option to one-pass.
#Mac could not unmount disk mac os#
Set the format type to Mac OS Extended (Journaled.) Optionally, click on Click on the Erase tab in the DU main window.ģ. After DU loads select your startup volume (usually Macintosh HD) from the Desktop diskutil list /dev/disk0 (internal, physical): : TYPE NAME SIZE IDENTIFIER 0: GUIDpartitionscheme 1.0 TB disk0 1: EFI EFI 314.6 MB disk0s1 2: AppleAPFS Container disk1 1.0 TB disk0s2 /dev/disk1 (synthesized): : TYPE NAME. Select Disk Utility from the main menu and click on the Continue button.Ģ. I'm on a Mac OS Catalina trying to wipe a drive via command line. Install or Reinstall Mavericks, Lion/Mountain Lion from Scratchīe sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.ġ. This should unmount the drive so you can now do this: For a single drive system this will probably be /dev/disk0. You should also see the name of the disk such as "Macintosh HD." Note down the disk identifier. If will look like /dev/diskn/ where "n" is an integer starting at 0. From the listing look on the left column for your disk identifier. If you are, then you neeed to do the following: Are you booted from the Recovery HD partition? If not, then you need to first boot from the Recovery HD before you can erase the Macintosh HD. I would normally reformat but I have a lot of stuff on the hard drive that I dont wont to lose.OK, Relax. Im asuming that to fix the hard drive it has to be able to unmount KAINARC.ĭoes anyone have any ideas of how I can fix this problem. If that doesnt resolve the issue then try shutting your computer down, then unplug the disk.
![mac could not unmount disk mac could not unmount disk](https://iboysoft.com/images/summary/first-aid-failed.jpg)
I have tried other repair/recover programs but get the same message: 'Could not unmount disk KAINARC' With the volume unmounted it should allow the process to complete. I then typed: diskutil unmountDisk force disk0 Followed by error: 'Forced unmount of disk0 failed: at least one volume could not be unmounted.' I need to get this hd unmounted so I can erase the hard drive, and I've run out of options.
![mac could not unmount disk mac could not unmount disk](https://www.macintoshrepository.org/articles/img/uploads/_filemanager/diskimagestoast/step1.png)
So I have opened diskwarrior (unbelievably long time to start up and scan disks) in the hope of fixing the hard drive, but when i try to repair I get the error message 'unable to unmount KAINARC'. Couldn't unmount disk.' I've went into Terminal, and typed: diskutil list. Repairing disk failed with error Could not unmount disk Unmount Disk is a small utility that help you to unmount and eject. Install the App Before changing the label we need to unmount the device 5. So I try to verify and repair the partition KAINARC but get this message: Sometimes even OS X Disk Utility couldnt fix this error, and you have to reboot your OS. access MS-DOS disks from GNU and Unix without mounting them Configuration. When i try to verify and repair the partition I get the message:Įrror: The underlying task reported failure on exitġ volume could not be repaired because of an error I go to disk utility and both partitions are visable, KAINARC is mounted but JUNGLEMAC is not. KAINARC now appears on my desktop, but the partition of JUNGLEMAC does not. I may have shut down the drive improperly to cause this situation. What causes the 'Couldn't Unmount Volume' error The causes of this error are several, starting with the abrupt shutdown and inconsistent file system. I have a Western Digital 500gb external hard drive, with 2 partitions, 'KAINARC' and 'JUNGLEMAC', connected to my Intelmac (Tiger 10.4.11 via my firewire, i have connected via usb but the problem is still the same). Usually, the error 'Couldn't Unmount Disk' shows up when you try to format, partition, verify or repair internal disk by Disk Utility on Mac system.